EP0038023A3 - Fiber optic directional coupler - Google Patents

Fiber optic directional coupler Download PDF

Info

Publication number
EP0038023A3
EP0038023A3 EP81102667A EP81102667A EP0038023A3 EP 0038023 A3 EP0038023 A3 EP 0038023A3 EP 81102667 A EP81102667 A EP 81102667A EP 81102667 A EP81102667 A EP 81102667A EP 0038023 A3 EP0038023 A3 EP 0038023A3
Authority
EP
European Patent Office
Prior art keywords
strands
fiber optic
interaction
region
directional coupler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP81102667A
Other languages
German (de)
French (fr)
Other versions
EP0038023A2 (en
Inventor
Herbert John Shaw
Ralph Alan Bergh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leland Stanford Junior University
Original Assignee
Leland Stanford Junior University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Leland Stanford Junior University filed Critical Leland Stanford Junior University
Publication of EP0038023A2 publication Critical patent/EP0038023A2/en
Publication of EP0038023A3 publication Critical patent/EP0038023A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/3536—Optical coupling means having switching means involving evanescent coupling variation, e.g. by a moving element such as a membrane which changes the effective refractive index
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
    • G02B6/2826—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals using mechanical machining means for shaping of the couplers, e.g. grinding or polishing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
    • G02B6/2826—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals using mechanical machining means for shaping of the couplers, e.g. grinding or polishing
    • G02B6/283—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals using mechanical machining means for shaping of the couplers, e.g. grinding or polishing couplers being tunable or adjustable
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/3594—Characterised by additional functional means, e.g. means for variably attenuating or branching or means for switching differently polarized beams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S359/00—Optical: systems and elements
    • Y10S359/90—Methods

Abstract

A fiber optic directional coupler comprises first and second strands 11 of single mode fiber optic material hav­ ing a portion of the cladding 37 removed from one side thereof, and means 16 positioning the strands together with the portion of the strands where the cladding is re­ moved in close facing proximity to each other to form a region 33 of interaction in which light is transferred be­ tween the strands. Said strands diverge away from each other at the ends of the region of interaction, and the spac­ ing between the core portions of the strands and the length of the region of interaction is such that the light makes a single transfer between the strands in the region of interaction.
EP81102667A 1980-04-11 1981-04-08 Fiber optic directional coupler Withdrawn EP0038023A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US139511 1980-04-11
US06/139,511 US4493528A (en) 1980-04-11 1980-04-11 Fiber optic directional coupler

Publications (2)

Publication Number Publication Date
EP0038023A2 EP0038023A2 (en) 1981-10-21
EP0038023A3 true EP0038023A3 (en) 1982-04-07

Family

ID=22487017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102667A Withdrawn EP0038023A3 (en) 1980-04-11 1981-04-08 Fiber optic directional coupler

Country Status (10)

Country Link
US (1) US4493528A (en)
EP (1) EP0038023A3 (en)
JP (1) JPS56154709A (en)
KR (1) KR830006699A (en)
AU (1) AU6329380A (en)
BR (1) BR8102200A (en)
CA (1) CA1253375A (en)
DE (1) DE3038048A1 (en)
IL (1) IL62596A0 (en)
IT (1) IT8121061A0 (en)

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Also Published As

Publication number Publication date
EP0038023A2 (en) 1981-10-21
KR830006699A (en) 1983-10-06
DE3038048A1 (en) 1981-10-15
CA1253375A (en) 1989-05-02
BR8102200A (en) 1981-10-13
US4493528A (en) 1985-01-15
JPS56154709A (en) 1981-11-30
IT8121061A0 (en) 1981-04-10
IL62596A0 (en) 1981-06-29
AU6329380A (en) 1981-10-15

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